Washout-plug.



H V'. WILLE.

WASHOUT PLUG.

APPLICATION FILED DEC. 15. me.

Patented Mar. 13, 1917.

l m w.

- UNITED STATES PATENT OFFICE.

HENRY V. WILLE, 0F PHILADELPHIA, PENNSYLVANIA, ASSIGNOR TO THE BALDWIN LOCOMOTIVE WORKS, OF PHILADELPHIA, PENNSYLVANIA, A CORPORATION OF PENNSYLVANIA.

WASHOUT-PLUG.

v Specification of Letters Patent.

Patented Mar. 13, 1917.

Application filed December 15, 1916. Serial No. 137,204.

To all whom it may concern:

Be it known that I, HENRY I. ll'ILLE, acitizen of the ['nited States, residing in. Philadelphia, Pennsylvania, have invented certain Improvements in 'ashout-Plugs, of which the following is a specification.

My invention relates to certain improvements in screw plugs, especially those used for boilers. of the locomotive. marine, or stationary type.

One object of my invention is to improve the construction of the plug and to reduce the cost of manufacture.

Astill further object of the invention is to make the plug so that it will not leak..

Heretofore, these plugs have been made from east brass. and, the casting being porous, there was a certain amount of leakage.

In the accompanying drawings:

Figure 1 is a side view of a washout plug illustrating my invention;

Fig. 2 is a plan view;

Fig. 3 is a sectional plan view on the line 33, Fig. 1';

Fig. l is a detached perspective view of the center section of the plug;

Fig. 5 is a perspective view of the cupped blank forming the outer section of the plug;

Figs. 6, 7 and 8 are sectional views showing different steps'in the process of manufacture; and

Fig. 9 is a view of a modification.

Referring to the drawings, 1 is a center made of steel, or other suitable material. having, in the present instance. a hexagonal. square, or other shaped. body portion 2, anda hexagonal. square. or other shaped, extension 3 to which can be applied any suitable hexagonal. or other shaped. body portion of the center 1. The cup is of a'greater length than the body portion and extends beyond the body portion. when the parts are assembled. as shown in Fig. 6. and will be turned over the upper edge of the said body portion, as shown in Fig. 7, so that the cup-shaped section I is held from movcut on the periphery of the cup-shaped section I, as shown in Fig. 8, making the finished plug illustrated in Fig. 1, so that, when the plug is screwed into the threaded opening. the cup-shaped section must turn with the center In Fig. 6', I have shown a hexagonal center. while, in Fig. 9, I have shown a square center. In some instances the body portion of'the center may be hexagonal, or other shape, and the extension may be square.

In Fig. 9,.1 have illustrated the center 1 as having an annular groove therein and the metal ofthe cup-shaped section 4 is driven into this groove. when the plug, is passed through a die. holding the outer sec-' t ion firmly to the center.

By forming the cup-shaped section from a pressed rolled plate of brass, I am enabled to make the plug. non porous, as the rolling of the sheet of brass closes the pores. Fur-t thermore, byusing a steel center, and a comparatively thin shell of brass; I materially reduce the cost of manufacture.

I claim:

1. The combination in a washout plug, of a center and an outer section secured to the center. said outer section being made of, rolled sheet metal so that the plug will be non-porous.

2. The combination in a washout plug, of a steel center provided with an irregi'llarly shaped body portion; and an outer section made from sheet brass pressed into shape i and surrounding the body portion and threaded at its periphery.

A washout plug made in two sections, the inner section having an irregular body portion and an irregular extension less in diameter than the body portion; and a cupshaped outer section made from sheet brass and having its edge turned over the body portion and threaded on its periphery so that the outer section must turn with the body portion.

l. The process herein described of making a washout plug. said process consisting in making an irregularly shaped center, and a cup-shaped outer section from rolled brass,

then assembling the two sections and passing them between dies so as to cause the outer section to conform to the shape of the center. 1

5. The process herein described of making a washout plug. said process consisting in forming a center having a body portion of irregular shape and a reduced extension and making a cup-shaped outer section from rolled brass, then assembling the two sec- 10 of the center. preventing the withdrawal of 15 the center from the outer section.

HENR Y V. VILLE. 

